Thinking on biuldin a new gaming rig

[batuchka]

+1 HD4770

 

[nachota1987]

what about the 4870? for the 4850 i was planning a coolermaster eXtreme 600W, but would it be enough for a 4870?

what about the 1gb versions? are they necesary for a 19 monitor?

what if in the future i got a bigger monitor? should i get the 1gb version?

does the 1gb version works fine with a 19" monitor?

hers the psu:

http://www.tranza.com/softis/pv/2324/COOLEREXTREMEPOWER-600W/